Liberty Bell

The Liberty Bell is an iconic symbol of American independence, located in Philadelphia, Pennsylvania. Formerly placed in the steeple of the Pennsylvania State House, now renamed Independence Hall. In the 1830s, the bell was adopted as a symbol by abolitionist societies, who dubbed it the "Liberty Bell". It acquired its distinctive large crack sometime in the early 19th century.

Trying to solve an impossible math problem, Francine scrawls her equations across the Liberty Bell in "National Treasure 4: Baby Franny: She's Doing Well: The Hole Story".